JP2916755B2 - Transplant machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling removing device for a transplanting machine, and more particularly to a seedling removing device for a transplanting machine for removing seedlings from a seedling tray conveyed by a vertical conveying device.

[0002]

2. Description of the Related Art Conventionally, as this kind of technology, for example, a swing fulcrum of a seedling picking claw that swings up and down is disposed above a transport end portion of a vertical transport device that transports a seedling tray. Around the center, the take-out claw whose tip is bent in a sickle shape is swung in an arc shape, the seedlings in the seedling tray are taken out based on the arc-shaped swing locus, and the seedlings are again moved in an arc-shaped swing locus There is a device which is lifted to an upper discharge position and discharged, accommodated in an implanter via a guide conveyance device provided below, and implanted by the implanting operation of the implanter. (Practical application 1-
No. 147963)

[0003]

However, the seedling removal claw according to the prior art described above draws an arc-shaped removal trajectory with respect to the seedling to be removed from the seedling tray conveyed by the vertical transportation device. It works from the back to the front,
The taken-out seedlings will rock together with the taking-out nails while being held by the taking-out nails, and thus come into contact with other seedlings left in the seedling tray to damage the seedlings of the seedlings,
In addition, when the seedlings released at the discharge position located above the transport device fall, there is a disadvantage that the seedlings are entangled with other seedlings in the seedling tray and disturb the falling posture of the seedlings. If the two plants drop at the same time, or if two plants fall at the same time, the seedlings may fall down, tilt, or be planted at the same time, even after transplanting using a transplanter. There is a problem that the transplanted state is obtained, and consequently, the rearing state of the seedling after transplantation becomes uneven.

The present invention has been made in view of the above-mentioned problems of the prior art. It is an object of the present invention to move a seedling removal claw forward and backward in a removal process and to remove a seedling in a seedling discharge process in which a vertical transport device is avoided. The seedlings taken out by the seedling take-out claws come into contact with other seedlings in the seedling tray, damaging the seedlings with each other. An object of the present invention is to provide a transplanting machine that can prevent falling of the seedlings, perform a stable operation of removing seedlings, and uniformly grow seedlings after transplanting.

[0005]

In order to achieve the above object, the present invention provides a seedling picking claw for picking up seedlings from a seedling tray conveyed by a vertical conveying device for conveying a seedling tray, and a transplanting part for transplanting the picked up seedlings. In the provided transplanting machine, the transplanting part is provided at a position facing the transport terminal end of the vertical transport device, and the movement trajectory of the seedling extraction claw moves the seedling from the entry position to enter the seedling tray and the seedling tray. In the seedling extraction process between the extracted extraction positions, a linear trajectory that moves forward and backward,
In the seedling release process between the extraction position and the seedling release position avoiding the vertical transport device, the seedling is configured to have a swing locus that swings downward from the removal position toward the transplanting part. .

Thus, the seedling removal nail is moved forward with respect to the seedling in the seedling tray, and the seedling removal nail is made to protrude into the seedling in the seedling tray at the entry position. Then, in the seedling removal process from the entry position to the removal position where the seedlings are removed from the seedling tray, the seedling removal claw is moved backward, so that the seedlings can be smoothly removed without difficulty in the removal direction of the seedlings. In addition, the seedling removal claw swings in the seedling release direction in a seedling release process from the removal position to the seedling release position avoiding the vertical transport device, whereby the seedling release position is changed. The seedlings released in the seedling tray are entangled with the other seedlings in the seedling tray to disturb the falling posture of the seedlings, and also, it is possible to eliminate the inconvenience of simultaneously dropping the other seedlings in a chain, and to stably The seedling removal operation can be performed. Furthermore, the seedling removal claw that has receded to the removal position in the linear locus swings downward from the removal position toward the transplanting portion provided at a position facing the transport end portion of the vertical transport device, thereby, The space required between the extraction position and the seedling discharge position can be minimized, and the transplanter can be made compact.

[0007]

FIG. 7 shows an example of a transplanter equipped with a seedling removal device according to the present invention. In the drawing, reference numeral 1 denotes a traveling machine of the transplanter, which includes a front frame 1a and a front frame 1a. The transmission case 1b and the rear frame 1c are integrally assembled, respectively. The engine 2 is mounted on the upper side of the front frame 1a, and the rear frame 1c supports an implanting device 3 described later. The mission case 1b
A pair of transmission cases 4, 4 each extending downward and rearward are provided on both side surfaces in the vehicle width direction so as to be able to swing up and down, and drive wheels 5, 5 are supported on their free ends, respectively. , 5 are driven by the rotational power transmitted from the engine 2 via the transmission case 1 b and the transmission cases 4, 4, and the traveling body 1 is configured to run by itself.

In addition, at the lower part of the traveling body 1 and at the front side of the drive wheels 5, an inter-strain detection switch (for detecting the inter-plant seedlings of the pot seedling by the transplanting device 3 while rolling on the upper surface of the ridge A) (Not shown) is supported so as to be able to move up and down via a swing arm 6a, and the inter-strain detection signal output from the detection roller 6 intermittently controls the drive unit of the transplanting device 3. The detection roller 6
The planting depth is controlled by the vertical movement of.

Further, a pressure-reducing wheel 7 running along the upper surface of the ridge is supported on a lower front portion of the front frame 1a via a support rod 1d, and the ridge A is provided on both sides of the pressure-reducing wheel 7. A pair of guide wheels 8, 8 running along the side surface are provided.

The transplanting device 3 supported on the rear frame 1c side of the traveling machine body 1 is a vertical transport section for roughly transporting a seedling tray 10 in which a plurality of pot seedling receiving sections 10a are arranged vertically and horizontally to a seedling extracting side. 20; a seedling extraction section 30 having a seedling extraction claw 31 for extracting a pot seedling from the seedling tray 10 at the transport end of the vertical transportation section 20; and a transplanter 81 which receives the seedling from the seedling extraction section 30 and performs a planting operation. The transplanting section 80 is provided on the mission case 1b side and is supported at a position facing the transport end of the vertical transport device 20. The transplanting section 80 has the seedling removal section 30 and the vertical transport section 20. Is supported on the rear frame 1c side.

In the drawing, reference numeral 9 denotes the rear frame 1c.
It is a steering handle attached to the rear upward.

The seedling removal section 30 of the transplanting apparatus 3 thus constructed is configured to take out the seedling from the seedling tray 10 with the seedling removal claw 31 and hold and release the seedling at the transfer end portion of the vertical transfer device 20. Holding mechanism, the seedling holding mechanism,
It has a claw operating mechanism that reciprocates linearly in the seedling taking process and swings in the seedling releasing process, and the interlocking operation of these two mechanisms allows the seedling taking claw 31 to move the seedling from the seedling tray 10. At the time of taking out, the seedlings are held by the seedling take-out nails 31 from the take-out process to the release process, and the seedlings are released from the seedling take-out nails 31 at the seedling take-out position avoiding the vertical transport device 20, and wait downward. Transplant 80
Is supplied to the implanter 81.

Specifically, as shown in FIGS. 1 and 2, a support member 32 is erected on the rear frame 1c, and an attachment body 33 having a support cylinder 34 at the center is attached to the support member 32. A sun gear 35 is fixedly mounted on the outer periphery of a support cylinder 34 of the mounting body 33, while a drive shaft 36 is penetrated through a through hole of the support cylinder 34 to rotatably support the sun gear 35, and is driven by one end of the drive shaft 36. The wheel 37 is fitted and fixed, and the rotor case 38 is fixed to the other end, and the rotor case 38 is driven to the support cylinder 34 via the drive shaft 36 on the same axis as the center of the sun gear 35. Supports free rotation.

Inside the rotor case 38, a planetary gear 39 meshing with the sun gear 35 is rotatably supported, and a transmission gear 40 meshing with the planetary gear 39 is rotatably supported. PT of case 1b
The driving wheel 37 is driven from an O-shaft 42 via a transmission 43 such as a chain or a timing belt, and the sun gear 35 is rotated while the driving gear 37 rotates to rotate the transmission gear 40 through a planetary gear 39. Is made to revolve. In this case, the gear ratio between the sun gear 35 and the transmission gear 40 is 2: 1.

The support shaft 40a of the transmission gear 40
Is protruded outward from the rotor case 38, the crank arm 41 is fixed to the protruding end, and the cam shaft 44 is protruded from the free end of the crank arm 41 so as not to rotate. As shown in FIG. 1, the camshaft 44 has, at an intermediate portion thereof, side cam surfaces 45a of which widths are changed on both side surfaces, and an outer circumferential surface having a radially changing outer circumferential surface. A cam 45 having a surface 45b is non-rotatably supported, and a base of a claw supporting member 46 having a seedling removal claw 31 is arranged at both sides of the cam 45 so as to sandwich the cam 45 so that the cam shaft 44 While being pivotally connected, a guide body 49 having a guide groove 48 having a linear guide portion 48a and a swing guide portion 48b is provided on the rear frame 1c via a support member 47, and the claw support member 46 is provided.
An engaging member 50 composed of a guide roller movably engaged with the guide groove 48 is provided at a position radially away from the pivotal portion of the engaging member 50 to the crank arm 41. Is moved along the movement trajectory of the seedling extraction claw 31 in the seedling extraction process between the entry position where the seedling extraction nail enters the seedling tray 10 and the extraction position where the seedlings are extracted from the seedling tray 10. In the seedling release process between the extraction position and the seedling release position avoiding the vertical transport device 20, a swing trajectory that swings downward from the extraction position toward the transplanting section 80 is used. It is configured so that 31 is located at the seedling release position.

The base of the claw support member 46 is provided with
The ball 51 and the ball receiving cylinder 51 are provided on the free end side as shown in FIG.
a pair of L-shaped rocking plates 52 supporting the shaft 5
The rocking plates 52, 52 are supported by springs 54 inwardly on the sides of the cam 45 so that the balls 51, 51 are supported on the side surfaces of the cam 45. When the cam 45 is rotated by this engagement, the swing plate 5 is engaged with the side cam surface 45a.
2 and 52 swing symmetrically in the left-right direction, and a pair of seedling removal claws 31, 31 respectively supported by the swing plates 52, 52 are opened and closed by the swing operation. When the nail support member 46 is at the seedling release position,
The seedlings 1 and 31 are opened to release the seedlings and supply the seedlings to the transplanting section 80.

The pair of seedling removal claws 31, 31 supported by the rocking plates 52, 52 are formed by sharpening the tip of a bar, and each of the seedling removal claws 31, 31 has: The claws 31, 31 are fitted with flanged extrusion cylinders 55, 55 having an inner peripheral surface that can be loosely fitted on the outer peripheral surfaces thereof, while the claw support members 46 are fitted.
Are provided on the sides of the protruding portion 46a, and the protruding portion 46a is
As shown in FIG. 3, the proximal end of the cam lever 56 is connected to the pivot shaft 5.
7 and freely swing through, and at its free end,
An extruding cylinder 55 having a pin 58 projecting therefrom, supporting a connecting rod 59 on the pin 58 via an intermediate portion thereof, and having both free ends of the connecting rod 59 provided on the seedling extraction claws 31, 31. , 55, and a cam roller 60, which is in contact with the outer peripheral cam surface 45b of the cam 45 of the pawl support member 46, is rotatably supported at an intermediate portion of the cam lever 56, and the roller 60 is , The pushing cylinder 55 and the swing plate 5
The outer peripheral cam surface 45b is always in contact with the outer peripheral cam surface 45b by a compression spring 61 interposed between the cam lever 45 and the cam lever 56. The free end is lifted, and the extruding cylinders 55, 55 are retreated to the base side of the seedling extraction claws 31, 31 with respect to the seedling extraction claws 31, 31 via the connecting rod 59 connected to the free end, and the roller 60 is the outer peripheral cam surface 45
When the cam lever 56 is engaged with the short diameter portion, the push rods 55, 55 are pushed down together with the connecting rod 59 at the free end of the cam lever 56 toward the tip of the seedling extraction claws 31, 31, and the seedling extraction claws 31, 3,
In the first seedling releasing operation, the tip of the extruding cylinder 55 presses the seedling to forcibly drop it into the transplanter 81 of the transplanting part 80.

On the other hand, as shown in FIG. 2, on the other side of the drive wheel 37 fitted with the drive shaft 36 by an engagement means, a connecting shaft 62 integrally connected to the wheel 37 is extended. The connecting shaft 62 is inserted into the transverse feed drive case 63 to be rotatably supported, and the transverse drive case 63 supports the clutch shaft 64 so as to be freely rotatable in parallel with the connecting shaft 62. A gear wheel 66 integrally provided with a cam 65 on the shaft 62 is non-rotatably supported.

A clutch pinion 67 having a predetermined speed increase ratio with respect to the gear wheel 66 is meshed with the gear wheel 66, and the pinion 67 is supported on the clutch shaft 64 so as to freely rotate. .

A clutch cylinder 68 adjacent to the clutch pinion 67 is supported on the clutch shaft 64 so as not to rotate relative to the clutch shaft 64. An outer peripheral surface of the clutch cylinder 68 and the clutch pinion 67 is provided. Then, a spring clutch 69 having one end locked to the clutch body 68 and the other end opened is fitted, and the outer peripheral surfaces of the both 67 and 68 are simultaneously tightened by the inner peripheral surface of the spring clutch 69. In order to transmit power, the open end of the spring clutch 69 and the gear wheel 6
6 is provided with a tentacle 70 that operates by engaging with the cam body 65, and the tip of the tentacle 70 is engaged with the open end of the spring clutch 69. The tension of the spring clutch 69 is relaxed so that the clutch pinion 67 rotates freely with respect to the clutch shaft 64 to interrupt the transmission of power intermittently.

The other end of the clutch shaft 64 is
The intermediate gear 71 is supported so as to be relatively non-rotatable at the protruding end thereof, and a driven gear 72 meshing with the intermediate gear 71 is freely rotatable by the lateral drive case 63. One end of a transverse feed shaft 73 having a traverse groove (not shown) supported by
Is fixed so that it cannot be rotated relative to. As shown in FIG. 7, a connecting rod 75 that moves in the horizontal direction via a slider 74 that engages with a traverse groove (not shown) of the horizontal feed shaft 73 supports a vertical position supported by the connecting rod 75. The transfer device 20 is provided with the seedling tray 10 set in the transfer device 20.
Is intermittently fed laterally by one pitch in the horizontal direction in conjunction with the seedling removal operation of the seedling removal claw 31.

The vertical transport device 20 sequentially removes the seedling trays 10 set in the vertical transport device 20 by another driving source (not shown) in conjunction with the operation of extracting the seedlings 30. It is configured so that it is vertically conveyed intermittently to a position.

Next, the operation of the embodiment configured as described above will be described. The implanter shown in FIG. 7 equipped with the present invention comprises:
Transmission case 4 from transmission by driving engine 2
4, the driving wheels 5 and 5 are driven to drive the transplanter along the ridge, while the transmission case 1b
The seedling removal unit 30 of the transplanting device 3 is driven from the PTO shaft 42 via the transmission 43, and the seedlings of the seedling tray 10 set in the vertical transport device 20 are removed at the seedling removal position of the seedling removal unit 30. At the release position, the seedlings are released by releasing the seedlings 31 at the release position, and the seedlings are released. The transplanter 81 of the transplanting unit 80 that performs the planting operation via a drive mechanism (not shown). The seedlings are transplanted to the soil. Further, the seedling extracting operation of the seedling extracting section 30 will be described in detail.

That is, the seedling removal unit 3 in the transplanting device 3
In the case of 0, the drive wheel 37 on which the transmission 43 is mounted is driven together with the drive shaft 36, and the drive shaft 36 drives the rotor case 38 to rotate integrally with the drive shaft 36.

As a result, as shown in FIG. 2, the planet gear 39 rotatably supported by the rotor case 38 revolves while meshing with the sun gear 35 and rotating.

Then, the transmission gear 40 meshing with the planet gear 39 revolves around the outer peripheral trajectory K of the sun gear 35 without meshing with the sun gear 35 while rotating in conjunction with the planet gear 39. As the transmission gear 40 rotates, the crank arm 41 fixed to the support shaft 40a of the transmission gear 40 rotates integrally with the transmission gear 40 as shown in FIG. At this time, the engaging body 50 provided on the claw support member 46 engages with the cam groove 48 of the guide body 49, and the crank arm 41 moves from the I position shown in FIG. The claw support member 46 moves forward along the linear guide portion 48a of the cam groove 48 in accordance with this movement. And the crank arm 4
When 1 reaches the position V in FIG. 4, the engaging body 50 provided on the pawl support member 46 reaches the end Z of the swing guide groove 48b through the bent portion of the cam groove 48. The claw support member 46 supported by the cam shaft 44 swings toward the seedling release position. Further, when the engaging body 50 retreats from the cam groove 48 from the above state, the crank arm 41 retreats and returns to the original position I with a completely symmetric trajectory to the forward movement trajectory, and performs the next forward movement. Starting, the pawl support member 46 makes one reciprocation in the cam groove 48 while the transmission gear 40 revolves once around the outer peripheral path K of the sun gear 35.

A pair of rocking plates 52, 52 supported by the pawl supporting member 46 via shafts 53, 53 so as to be rockable.
In a state where the balls 51, 51 of the rocking plates 52, 52 are engaged with the side cam surfaces 45a of the cam 45 fixed to the cam shaft 44, the balls are opposed to each other against the urging force of the spring 54. And the seedling removal claw 3 supported by the rocking plates 52, 52
The seedlings are released by the release operation of 1,31.

Further, at the time of releasing the seedlings, the cam lever 56 supported by the projection 46a of the claw support member 46 has the cam roller 60 of the lever 56 and the outer cam surface 4 of the cam 45.
5b, the rocking plate 52 is engaged with the outer peripheral surface of the short diameter portion.
The compression spring 61 interposed between the pressing rod 55 and the pushing cylinder 55 swings downward.
The extruding cylinders 55, 55 fitted to the claws 31, 31 are attached to the claws 31, 3.
By pushing down the seedlings, the release operation of the seedlings held by the claws 31 is forcibly promoted, and the falling of the seedlings is improved.

After the release of the seedlings, the cam roller 60
As the cam 45 rotates, it engages with the outer peripheral surface of the long diameter portion of the cam 45 to lift the cam lever 56 and retreat the pushing cylinders 55, 55 toward the base side of the seedling extraction claws 31, 31, so that There is no problem in the process of removing the seedlings.

On the other hand, after the completion of one seedling removal, the clutch pinion 67 rotatably supported on the clutch shaft 68 and the clutch body 68 are connected to the spring clutch 69.
And the two 67 and 68 are linked.

That is, when the tip of the tentacle 70 that operates by engaging with the cam body 65 is engaged with the open end of the spring clutch 69, the spring clutch 69
Is loosened and the interlocking of the two 67 and 68 is interrupted, but when the engagement of the tentacle 70 is released, the clutch 69 is tightened, and the intermediate gear 71 and the driven gear 72
The transverse feed shaft 73 is rotated by the drive wheel 37,
It rotates intermittently interlockingly with the operation of the seedling extraction unit 30.

The vertical transport device 20 is set on the vertical transport device 20 integrally with a connecting rod 75 that moves in the horizontal direction via a slider 74 that engages with the traverse groove of the horizontal feed shaft 73. The seedling tray 10 is intermittently moved by one pitch in the horizontal direction in conjunction with the operation of the seedling extracting unit 30.

When all the seedlings in a row in the lateral direction of the seedling tray 10 have been removed at the seedling removal position at the transfer end of the vertical transport device 20, another operation interlocked with the operation of the seedling removal unit 30 is performed. The vertical transport device 20 is driven by the drive source, and the seedling tray 10 is transported by one pitch in the vertical direction of the seedling tray 10 to the seedling removal position.

Then, as shown in FIG. 3, after the nail supporting member 46 is swung to the seedling releasing position,
The seedlings are transplanted to the soil surface by the transplanter 81 of the transplanting unit 80 which is operated to release the plant 1 and waits downward based on the above-described planting locus.

In the embodiment shown in the figure, as shown in FIG. 6, the mounting hole 33a of the mounting body 33 to the support member 32 is formed as a long hole concentric with the sun gear 35, and the mounting body 33 is formed by the mounting screw 33b. The support member 32 is bolted so that the mounting angle with respect to the support member can be changed. By adjusting the position of this bolting, the sun gear 3
5 while the planetary gear 39 and the transmission gear 40 remain engaged,
The phase of the sun gear can be changed by changing the mounting angle of the mounting body 33 with respect to the support member without changing the phase of the rotor case 38. Therefore, for example, if the phase of the sun gear is changed by the angle θ, the gear ratio between the sun gear 35 and the transmission gear 40 becomes 2:
As a result, the transmission gear 40 is shifted by 2θ, whereby the angle of the claw support member 46 is changed together with the angle of the crank arm 41, and the seedling removal claw 3 is accordingly adjusted.
1 can be changed, and as a result, the movement locus of the seedling removal nail 31 with respect to the removed seedling in the seedling tray 10 can be adjusted.

In the embodiment described above, the vertical transport device 20 is disposed behind the rear frame 1c and inclined upward and rearward, and the seedling removal unit 30 is provided in front of the vertical transport device 20. Is provided to improve maneuverability, but may be reversed.

[0037]

As described above, according to the transplanter of the present invention, the seedlings can be taken out by moving the seedling picking nail forward and backward with respect to the seedlings in the seedling tray in a linear trajectory. The seedlings can be taken out smoothly without any difficulty in the direction, and the seedlings can be prevented from coming into contact with other seedlings in the seedling tray and damaging the seedlings with each other. In order to swing the seedling removal claw downward from the removal position, and to swing toward the transplanting portion provided at a position facing the transport terminal end of the vertical transport device that transports the seedlings to be removed by the seedling removal claw, The space required between the extraction position and the seedling discharge position can be minimized, and the transplanter can be made compact. In addition, since the seedling removal claw that takes out and holds the seedling is released at the seedling release position avoiding the vertical transport device, the released seedling is entangled with the seedling in the seedling tray and the seedling falls. Problems such as disturbing the posture and simultaneous dropping of the other seedlings in a chain can be eliminated, and a stable seedling removal operation can be performed.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a seedling removal device according to the present invention.

FIG. 2 is an expanded view showing a direction necessary for understanding the plane direction of FIG. 1;

FIG. 3 is a reference diagram showing an operation state of FIG. 1;

FIG. 4 is an explanatory diagram showing a movement locus.

FIG. 5 is an explanatory view of a seedling holding mechanism.

FIG. 6 is an explanatory view showing an attachment state of an attachment body to a support member.

FIG. 7 is an overall view showing an example of a transplanter equipped with the present invention.

[Explanation of symbols]

 Reference Signs List 10 seedling tray 20 vertical transport device 31 seedling removal claw 35 sun gear 38 rotor case 39 planetary gear 40 transmission gear 41 crank arm 46 claw support member 48 guide groove 48a linear guide portion 48b swing guide portion 50 engaging body

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masatoshi Hikami 1-32 Chaya-cho, Kita-ku, Osaka-shi, Osaka Inside Yanmar Agricultural Machinery Co., Ltd. (56) References JP-A-53-75027 (JP, A) (58) ) Surveyed field (Int.Cl. ⁶ , DB name) A01C 11/02

Claims (1)

(57) [Claims] 1. A seedling tray vertical transport device seedling taking out nails taking out the seedlings from the seedling tray which is conveyed and taken out seedlings transplanter transplanted portion is provided porting that carry the transplant unit
Is provided at a position facing the transfer end portion of the vertical transfer device, and the movement trajectory of the seedling removal claw is moved between an entry position for entering the seedling tray and a removal position at which the seedling is removed from the seedling tray. In, a linear trajectory that moves forward and backward,
In the seedling release step between the extraction position and the seedling release position avoiding the vertical transport device, the seedling is transferred from the extraction position to the transplanting section.
An implanting machine characterized in that it is configured to have a swing trajectory that swings downward toward the front.